First-order formalism and dark energy

2005/12/07 by D. Bazeia, C. B. Gomes, C.B. Gomes +2 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Relativity and Gravitational Theory #astro-ph #hep-ph #hep-th

paper · pdf · doi:10.1016/j.physletb.2005.12.031

published as Phys.Lett.B633:415-419,2006 · 7 pages, 3 figures

arxiv created 2005/12/07 · openalex publication_date 2005/12/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This work deals with cosmological models driven by real scalar field, described by standard dynamics in generic spherical, flat, and hyperbolic geometries. We introduce a first-order formalism, which shows how to relate the potential that specifies the scalar field model to Hubble's parameter in a simple and direct manner. Extensions to tachyonic dynamics, and to two or more real scalar fields are also presented.

Citations

• Cosmological Constant - the Weight of the Vacuum
• Quintessence and the Rest of the World
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

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